Trolley collector



May 15, 1923.

I P. T. J. ESTLER TROLLEY COLLECTOR Filed May 2, 1922 Inve" PT J Estler Patented 'May 15, 1923.

lv it 5) Si ,PAUVL raansortr JULIUS ESTLER, or Lennon, ENGLAND: I

TnoLLnY oonnno'ros.

. Application filed May 2, 1922.. Serial noqasmm.

To all whom it may concern Be it known that 1, PAUL Tnanoorr JULIUs Esrnnn, a subject of the King of f the trolley collector is preserved from any Great Britain, and resident of London, England. have invented certain new and useful Improvements in Trolley Collectors, of which the following is a specification.

This invention relates to trolley collectors for electrically driven tramcars or road motor vehicles and more particularly to that type of trolley collector which comprises two or more trolley poles mounted one above the other on the same vertical axis.

The object of the present invention is to so construct and arrange'the various parts that the body of the trolley collector is insulated from any electrical contact whatsoever and in order that my invention may be clearly understood and readily carried into effect I have illustrated a constructional form of the same in the accompanying drawing wherein similar reference characters relate to similar parts in both figures Figure 1 being an elevation and partial section and Figure section on line 2-2 in Fig. 1.

Referring to the said drawing the base plate a of the trolley collector body which is mounted in the usual manner on the top of the vehicle is shewn with the hollow trunnion b on which are rotatably mounted the cap 0 and sleeve d carrying the upper and lower trolley poles e and 7'' respectively, asecond sleeve 9 provided with the horizontal flange it being also mounted on the trunnion l) and fixed thereto between the cap '0 and sleeve d. i represents a contact member carried by the insulator j secured to theunderside of the top of the rotatable cap 0 and adapted to rotate on and thereby make contact with a fixed contact member 72 carried by the flanged rings Z and m which are supported on the insulator a mounted on the internal circular flange 0 of the trunnion b. 79 represents another movable contact member carried by the bracket 1 attached to therotatable sleeve (Z but insulated therefrom at a", the contact member p being adapted to slide on and thereby make contact with the ring 8 carried by the flanged ring t secured to the fixed sleeve 9 and supporting the fixed contact member u; insulators 0,

three of which are shewn in the drawing, be-

ingdisposed between the flange h of the sleeve 9 and the horizontal flange ofthe ring for the purpose oii suspending the I ring t from the flange h.

By this construction the metal body of electrical contact whatsoever, the insulated cables to, w conveying the current from, and

to the poleheads 3 and 2 respectively which are mounted on the poles e. and 7 but insulated therefrom as shewn ate. I

Polehead 1 receives currentfrom the overhead conductor 1 from whence it passes through cable to and the rotatable contact member 2' to fixed contact member 70 and i from thence by wire 41: to the motor on the vehlcle from which it is returned. by the cable 00' to the fixed contact member a and from thence by therings t and s and the sliding contact member pto the returnoable a2, polehead a and overhead conductor wire 1;

The abllity of the poles e and f to accommodate themselves independently tothe side tra'mways and in road motor vehicles (for.

example where a three wire system is used) 1t 1s expedient to use more than two collector trolley poles, even then invention is apto side movements of the vehicles on the road.

plicable, for any reasonable number thus mounted can be insulated in'the manner described. I

What I claim is i 1. In combination, a trolley collector body, a cap and a sleeveboth rotatably mounted on said body and a second sleeve fixed to said body an upper trolley pole carried by said rotatable cap and alower trolley pole carried by said rotatable sleeve both said trolley poleshaving pole heads electrically insulated from said poles for contact withoverhead electric conductors,- electric conductors leading from and to said pole heads, movable contact members carried by said rotatable cap and said rotatable sleeve, fixed contact members carried by the. trolley collector body, and electric insulating means mount- I ed on said rotatable cap and trolley collector 1 105 body, and also on said rotatable and fixed sleeves,

2, Iii-combination a trolley collector body it with a hollow trunnion projecting therefrom,

a cap and a sleeve both rotatably mounted on a I i said trunnion-and a second sleevefixed to said trunnion, an upper trolley pole carried by said rotatable cap and a lower trolley pole carried by said rotatable sleeve, both said trolley poles having pole heads electrically insulated from said poles for contact with overhead electric conductors, electric conductors leading from and to said vpole heads, a movable contact member carried by an insulator attached to said rotatable cap 10 a fixed contact member supported on another insulator mounted on the aforesaid trunnion, a second movable contact member carried by said movable sleeve and insulated.there from, a second fixed contact member supported on a flanged ring secured bathe aforesaid fixed sleeve and insulating mein bers between said flanged ring and said fixed sleeve. I

In testimony whereof I afllx mysignature. PAUL TRANGOTT JULIUSESTLER. 

